The pneumonia after quitting smoking has nothing to do with quitting smoking, because whenever you quit smoking there are direct benefits to the patient. Tobacco contains harmful chemicals such as nicotine that can have a series of effects on the airways, alveoli and interstitial lung, thus increasing the chance of pneumonia and lung cancer. The pneumonia that occurs after you quit smoking should continue to have the willpower to quit smoking to the end, while further selecting sensitive antibiotics to control the infection according to the patient’s sputum bacterial culture and drug sensitivity test results, so as to achieve the purpose of treating pneumonia.